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Note Allowance for loan losses (Allowance for loan losses - Additional Information) (Detail) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) loans | Dec. 31, 2017 USD ($) loans | Sep. 30, 2018 USD ($)
Financing Receivable |  |  |
Recent Loss Trend Adjustment | 12-months |  |
Charge-offs | $ 352,622 | $ 311,575 |
Loan count | loans | 527 | 641 |
Note A / B Split |  |  |
Financing Receivable |  |  |
Troubled debt restructurings | $ 52,500 |  |
Aggregated unpaid principal balance | 82,100 |  |
Charge-offs | 29,600 |  |
Recorded investment - with an Allowance | $ 105 |  |
Loan count | loans | 6 |  |
Non Covered Loans |  |  |
Financing Receivable |  |  |
Troubled debt restructurings | $ 1,515,889 | $ 1,258,327 |
Aggregated unpaid principal balance | 1,245,816 | 1,108,393 |
Recorded investment - with an Allowance | $ 795,308 | $ 834,526 |
Non Covered Loans | Banco Popular de Puerto Rico |  |  |
Financing Receivable |  |  |
Recent Loss Trend Adjustment Percentage | 26.00% | 69.00% |
Non Covered Loans | PB |  |  |
Financing Receivable |  |  |
Recent Loss Trend Adjustment Percentage | 28.00% | 3.00% |
Mortgage and consumer |  |  |
Financing Receivable |  |  |
Historical Loss Period | 18-months |  |
Commercial and construction |  |  |
Financing Receivable |  |  |
Historical Loss Period | 5-year |  |
Mortgages |  |  |
Financing Receivable |  |  |
Charge-offs | $ 71,071 | $ 83,393 |
Mortgages | Non Covered Loans |  |  |
Financing Receivable |  |  |
Troubled debt restructurings | 1,042,470 | 930,076 |
Aggregated unpaid principal balance | 605,120 | 591,070 |
Recorded investment - with an Allowance | $ 416,004 | $ 457,000 |
Loan |  |  |
Financing Receivable |  |  |
Change Allowance For Loan Losses Recalibration And Updates Of The Enviromental Factors Adjustments |  |  | $ 6,100
Loan | Banco Popular de Puerto Rico |  |  |
Financing Receivable |  |  |
Change Allowance For Loan Losses Recalibration And Updates Of The Enviromental Factors Adjustments |  |  | 5,900
Loan | PB |  |  |
Financing Receivable |  |  |
Change Allowance For Loan Losses Recalibration And Updates Of The Enviromental Factors Adjustments |  |  | $ 200

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- Definition Recalibration and updates of the enviromental factors adjustments. + References No definition available. + Details
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- Definition Amount of charge-offs of financing receivables charged against the allowance. + References No definition available. + Details
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- Definition Historical loss period used to compute the base net loss rate in the determination for the general reserves of the allowance for loan losses. + References No definition available. + Details
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- Definition Recent loss trend adjustment replaces the base loss rate, when these trends are higher than the respective base loss rates, up to a determined cap. The objective of this adjustment is to include information about recent increases in loss rates in a timely and prudent manner. + References No definition available. + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524 + Details
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- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
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